| 1 | |
| 2 | |
| 3 | #include "vmlinux.h"
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| 4 | #include <bpf/bpf_helpers.h>
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| 5 | #include <bpf/bpf_tracing.h>
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| 6 |
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| 7 | char _license[] SEC("license") = "GPL";
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| 8 |
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| 9 | SEC("raw_tracepoint/kfree_skb")
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| 10 | int nested_loops(volatile struct pt_regs* ctx)
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| 11 | {
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| 12 | int i, j, sum = 0, m;
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| 13 |
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| 14 | for (j = 0; j < 300; j++)
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| 15 | for (i = 0; i < j; i++) {
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| 16 | if (j & 1)
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| 17 | m = PT_REGS_RC(ctx);
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| 18 | else
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| 19 | m = j;
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| 20 | sum += i * m;
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| 21 | }
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| 22 |
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| 23 | return sum;
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| 24 | }
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